Checker Brick
Checker brick with porous/honeycomb custom holes (Al₂O₃ 45-75%, RUL ≥1500℃) maximizes specific surface area for efficient regenerative heat exchange—the core element of hot stove checkers.
Learn More →Hot Blast Stove Checker & High-Alumina Brick Package
For damaged checker bricks and blocked passages in the high-temperature zone, low-creep high-alumina brick, silica brick and shaped checker tiles were supplied to drawing, improving blast temperature stability.
Customer：Ironmaking plant in Hebei (2500 m³ BF stoves)Location：Handan, Hebei
1Challenge
After long operation above 1300°C the checker bricks crept and cracked, blocking flues and destabilising blast temperature. A precise drawing-based brick package and reliable delivery were required.
2Solution
Low-creep high-alumina brick was used for the high-temperature zone walls and checkers, silica brick for the medium zone. Shaped checker tiles were CNC-machined to the stove drawings, crated with numbering, and supplied with high-alumina mortar and bricklaying guidance.
3Result
Blast temperature became noticeably more stable and the checkers are designed to last a full campaign. The customer was satisfied with shape precision and complete delivery, and has agreed on second-phase stove maintenance cooperation.
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Low-Creep High-Alumina Brick
Low-creep high-alumina brick with Al₂O₃≥75% and creep rate ≤0.8% (1550℃×50h), RUL ≥1550℃. Minimal deformation under long-term hot load, engineered for load-bearing hot stove domes and walls.
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Silica Brick
Silica brick with SiO₂≥94%, refractoriness ≥1690℃ and RUL ≥1620℃ shows no high-temperature shrinkage, stable under long-term load and resistant to acid slag and atmospheres—the recommended choice for coke ovens.
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